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參數(shù)資料
| 型號(hào)： | MIC5031 |
| 廠商： | Micrel Semiconductor,Inc. |
| 英文描述： | High-Speed High-Side MOSFET Driver(高速高邊MOS場(chǎng)效應(yīng)管驅(qū)動(dòng)器) |
| 中文描述： | 高速高邊MOSFET驅(qū)動(dòng)器（高速高邊馬鞍山場(chǎng)效應(yīng)管驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 88K |
| 代理商： | MIC5031 |
August 1999
1
MIC5031
MIC5031
Micrel
MIC5031
High-Speed High-Side MOSFET Driver
Not Recommended for New Designs
General Description
The MIC5031 MOSFET driver is designed to switch an
N-channel enhancement-type MOSFET from a TTL control
signal in a high-side switch application. The MIC5031 pro-
vides overcurrent protection, can accommodate loads with
high-inrush current, and is designed to survive automotive
power disturbances. This driver is suitable for up to 30kHz
PWM operation with 0% to 100% duty cycle.
The MIC5031 is powered by the +4.5V to +30V load voltage.
An external bootstrap capacitor and internal charge pump
drive the gate output higher than the supply voltage. The
bootstrap capacitor provides speed, while the charge pump
can sustain the high gate output voltage continuously.
The MIC5031 features a resistor programmable overcurrent
shutdown (circuit breaker) function that monitors the voltage
drop across the external MOSFET. A capacitor program-
mable shutdown delay allows a high-inrush current load to be
energized without causing undesired shutdown. An open-
load detection feature is included and can be used by adding
an external high-value resistor.
The MIC5031 is protected against automotive load dump and
reverse battery conditions. The driver is also protected from
excessive power dissipation by an internal overtemperature
shutdown circuit.
An open-collector fault flag output indicates overcurrent,
overtemperature, or open-load fault conditions.
Typical Application
On
Off
FLG
RV
G
VDD
EN
CTL
100k
*Sets Overcurrent Trip to MOSFET V
≈
102mV
Optional Resistor for Open-Load Detection
Optional Capacitor for Overcurrent Delay
§
Optional Resistor and Capacitor for Power-up Sequence
+4.5V to +30V
MIC5031
CB
CP1+
S
CP1–
RI
CP2+
CS
CP2–
DLY
GND
15μF
50pF
12k*
0.1μF
1k*
Normal
51k
0.01μF
0.01μF
Enable
7
4
3
10
8
11
9
5
2
6
15
13
12
16
14
1
IRF540
0.1μF
M
2N5822
100μF
100nF
10k
§
0.01μF
§
High-Side Power Switch and Circuit Breaker
Features
+4.5V to +30V operation
Fast gate drive
(rise time = 70ns, fall time = 50ns,
with 1000pF load and 5V supply)
Overcurrent detection across MOSFET
Overcurrent shutdown delay
Charge pump for high-side dc applications
TTL compatible input
Overtemperature shutdown
Automotive load dump protection
Reverse battery protection
Open-collector fault flag
Near zero-current disable state
Applications
Automotive power switch
Automotive PWM control
Circuit breaker
PWM circuits
Ordering Information
Part Number
MIC5031BM
Temperature Range
–40
°
C to +85
°
C
Package
16-lead SOIC
Micrel, Inc. 1849 Fortune Drive San Jose, CA 95131 USA tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 http://www.micrel.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MIC5031BM | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:High-Speed High-Side MOSFET Driver |
| MIC50395 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Six Decade Counter / Display Decoder Not Recommended for New Designs |
| MIC50395CN | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Six Decade Counter / Display Decoder Not Recommended for New Designs |
| MIC50396 | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Six Decade Counter / Display Decoder Not Recommended for New Designs |
| MIC50396CN | 制造商:MICREL 制造商全稱:Micrel Semiconductor 功能描述:Six Decade Counter / Display Decoder Not Recommended for New Designs |
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